Mouthpiece for telephones.



UNITED sTATEs PATENT oEEroEL FRANK o. nauseas/mim,` or NEW Yonx, NQY.

MOUTHPIECE FOR TELEPHONES.

lpeemeation of Letters Patent.

.Patented N Dv. 14, V1911.

Application am lmmbe 11K, 1910. serial No. 591,771.

To all whom 'it may concern:

Be it known that I, FRANK O. Bauma MANN, a citizen of the United States, and

- of Kings, city'and State of New invented Vcertain new and useful Improveresident of theboroug'h of Brookl n,county ork, have ments in Mouthpieces for Telephones, of which the following is a specification.

My invention relates to mouth pieces for telephones and has for its object to provide a mouth piece made of porcelain or other similar material which forms a perfect nonfA conductor, isreadily and easily kept clean and antiseptic and further is not readily broken or chipped. l

A further objectof my invention is to combine said mouth piece with aimetallic attachingdevice in a simpleand effective manner so that the saidinouth piece may be securely and yet removably fastened to'the telephone proper.

My invention will be full described here-V inafter and the features o novelty will be pointed out in the ap ended claims.

Reference is to be iiad to the accompanying drawings in which- Fi ure 1 is an elevation of my improved y mout piece with parts broken away; Fig. 2

is a sectional view thereof on the line 22 of Fig. 1; Fig. '3 is an end view of the mout-h piece proper and Fig. 4 is a perspective view of the metallic fastening ring.

- In carrying out my invention the body 1A of the mouth piece is madein the usual flar- `tionsin the partition 2. At one oint in the annular channel 3 a prefer; )ly integral lug or rojectiom is provided for the purpose to emore fully described hereinafter. In order to permit the said mouth piece to be removably secured in operative position on the telephone I provide a metallic ring 6 hav- .ing its entire outer' surface screw threaded and provided with' a recess 7 arranged'to co 4operate with the projection 5 as will appear more fully farther on in the description.

tion. By"A having the 6 ace The one end of said ring 6 is first dipped into a suitable cement or cher binder 6 y and then inserted into the (hannel `3 with the recess 7 placed` over the `)rojection 5 in Which-position fthe cement i: lpermitted to set andthus secure the ring 6 iirmly in posithronghout its outer sur the cement or other binder will enter some of'said screw :crew threaded threads or rather the space: therebetweenv and thus serve as a positive neans` for pr'eventing the withdrawal of .th i ring from the channel 3. In other words a roughened surface is provided which affor ls a firm foot ing or foundation forthe bir de rso that the mouth piece and the fastenii lg ringare securely fastened together anl form a sub 'stantially single structure. I: desired an additional annular oove 8 m y be provided on the inner sur ace of the nouth piece at a point just inside its inner and into which theeement or other binder xr ay lind its way toprovide a still further locli against the relmoval of the metallic ring. Should thecement or other binderfrom some cause be-v come ineffective in time and thering 6 become loosened thepr'ojection 5.andrecess 7 will prevent relative rotal Iion or vlateral movement between thefrig 6 and mouth piece 1 sowthat said ma;7 be unscrewed fromth'e telephone by me nipulating the mouth piece. After this -ha: been done the said ring may be removed lrom the mouth pieceV 'and'.,refdipp'ed' in a 4fr ash binder a'nd again connected with'the mouth piece as above described or a new ri 1g may besubstituted. VIt is, of course tc be understood that methods o fv ap lying tl escement other than the one descri d here n may be used .and that said ring 6 may le first inserted into the channel 3 and the t inder then suitably applied as by pouring f desired. The axial length of the ring 6 is such that when 'it is'in position on the moutl piece a portion of said ring will project b: yond the inner end of the mouth piece so a i to 'be exposed.

This exposed ortion of the ring is adapted to be screwe into the tra ismitten in the usual manner and .serves to s scure the mouth piecel in operative' position. The ring 6 is further provided with the u sual vents 9 for preventing sudden excessive pressure, as by sudden gusts of air, from isarran ing the usual diaphragm and carbo] l partie es.

p -My invention thus ro `fides aV simplemeans for firmly land ngi(l ly securing the smooth as heretofore.` The j or careful manipulation of the threading 4 Apresent ccnstruction also does away with the 'necessitv machine in order not to. usual smooth portion.

- The advantages of the piece are its capability of encroach Von the i porcelain mouth being readily and ding into said mens.

A mouth and 'coperatin ocated respectively onsaid bodv an said attaching means forpreventing relative l movement between, said-bo pieceffor telephones compris-l piece for telephones compris- .in a lbody port-ion having an' annular recess a Jacent to its one end/, attaching means en'-v veasil ,kept clean and its non-porosi'ty-so that 5. -A` mouth it w" 1v not catch dust, 4disease erms andthe in 'a body portion having an annular recess '.like. It is also not -as4 britt e as the-cus. y adacentgto 1t's one 'end -an attaching ring extomary, mouth piece and will therefore not4 tending-'into-said recess and having its outerv v break as readily. Various changes in the specific form- 20 frm the spirit offmyinvention.

lone'end; ace of4 said body'p'ortiomattachin v groove and means for shown and described maybe madel within theseope'of the claimswithout departing claim:` A 1. A mouth piece for telephones compris# ing a y portion' having at 'its one end an annular oove extending inwardly from the abe means larrange be mserted mg means in said groove.'

2.1`Amout-h piece for telephones comprisrate .e portion'of-itsouter surface which' is 1n saidmecess rougheiied and a binder y position.

3. A mouth piece for telephones comprisa bodyportion having an annular recess 'its `one end, a projection in said surface screw-threaded binder. adapted to coperate wi said screw positiom in abcd securing said attach- 7,'

' ing ,c bod end aiid prjecting-vinto- Sa'l means for securing t In witness whereof.

hand in the wltnesses.A l y FRANK '0, 1

Witnesses:

throughout and a -threads toV A mouthpiece for tele' lianes compris# y portion and attach' one over the other in the d theirl common axis and means `located be? tween ,adjacent surfaces of said body po and attachingmeans for portion and Securing' saldi attaching meanstogether: l

secure saidringl A mouthpiece `for telephones comprisn' v4-'portion havi'f a on one drecess and means 'seV abody P from .said

em together. i

Jona A. Knnfnnnnox', M. H. Lodxwoov. Y

attachingmeans' avmg a portion.

' ortion and attahmg i" presence' of two subscribing.. l 

